Telegraph recorder control



Oct. 24, 1944. w BACON 2,361,004

TELEGRAPH RECORDER C ONIROL Filed Nov. 9, 194a TVP/NG REFERFERA 70/?sascrok HOLDING MA a/va'r v IM;

KEY MA GIVE 7 WI/EN TOR WM BA CON A T roam-v Patented Oct. 24, 19442,361,00'4- rnmonezentmsconmtatommon Walter M. Bacon; New York, N: 11:,assijgi ur te BellTelephone Laboratories, Ignoringora ted;New York, N-.Y1, acorporation ofiNewYorlr V Ann a on ov mber 9, 19.4.3; SeriaLNo. tom5,37%, I 3*Claims; (C12 1'78 92') Tms nvent n. relates to; telegraphsystems and m par i larly to mproved appara us and circuits; for.cooperation with, a receiving.- device or reperfor-ator; for causing;the receiving device or reperi rator to advance..- a; record, mediumtherethrq eh undercontroi; of an; operator: in

the absence of received signalsr..

A, feature of the invention; relates; to! appaa sr zr i s or p ev ntingthe: feede ut ism r m interier nei w th he reception a d cording i:. hetceiv is nals.

y ems, of; the; p or;- a tglhave: been; ar an ed. either, to: provide:no; feedeout; of; the recording ed um r: o provide: eed-out u ing achpause. in. t e; transm ssi n r: reten i n of; sige nals o lser hei edwut5. .15 .1 9 the-control: of

pe ator; who n feres; with thereoeption Y e r e r ing f: i nals andauses; ainiiinber of fa se si nals. mhe oordedt t v t oeBaoolr ett:l\'-,.Seria1sNo'.

83;. Q. filed; M 15, 1941'; a. comp i t Q ulntin rr n ment; is.disclosed. for counting f ur e ers; cha acters; which must be trans-.-mitted, before each; series; ofmessage signalstin order; to; insur that;the automatic. operation .''of the; record; instrument thastbeen)stopped and t re or in iins rument. isin position tozprope er rs eco d:rec ived; signals; While this countne: arraneementoperatesasatisfactorily for letters signals; the receptiontof other signal'simaycause impropen operation of: the-sy r s; n: .Qbj ect of: the present"invention-to pro, vide a feed-out arrangement operatedzundergthecontrol of= an, operator which I will operate properly: for any: of the.signals transmitted precede m the messages Eurthermoliay the arrangementemployed; in the; exemp1aryxemhodiment.-. ofrthe invention describ'edtherein- :is; much simpler and cheaper and only; requires threesignals: preceding: each message to insure that; thesreceiving'instrument will be properly synchronized with'rthereceivediisig nals so that ;the-: succeedingesignalswill' beprop-"- erlyrecordedztherebyi Furthermore, means are providedlfor insuring that thereceived signals will bee-properly; recorded ;and-' freeafrominterference: by accidental ;orimproper operation I of the feed-out keyby an operator. t

Briefly, in-.-accorda-nce with the present invention the time delaydevice, such as a slow-acting relay, is employed to maintain thecontrolling or selecting magnet of the receiving device or reperforatoroperated during the time the feedout magnet is operated. In other words,the selecting magnet is maintained operatedindenendentlyyoi-greeeiued.sig alsd r ngitheitimeth mac i e. dvancin orfeeding; out tone: under oontroltottlie. ocal qn ratoef In ad ion, themagnet 13% maintained rone a ed. for: a shortv in: er a at t me: o ter:the; ieeoout s; nterrunted either y the; operator.- ieleaSing he keg r."by he r en i mofisie els-r v Ina m c as: it: remiires; ne. o imatel i the ters; i nalstomel ase he foedrout ma n t/rand br ng: the eco dinginstrumentrto rest; nioosir ienl w ere it readx tot resn nd: t0.- and po r y re ordvthe.neceiv dzsigna s, it is; des r ble o have theimer elaydev oerm intainthe; selec inerma neti oriented-Murine; he r o ption of:at least a; ma o 29. 3 191 of: t ese three ioharagters ino e. mbinatons; no r o The f reeoinezandeotheir objects: and features of hssinventionethe novelz-fea-tiues 0i whiohrare pe if ally; pointed: ut: nhe claims appended heretormay e mo e; ead. 1. understo d: by: ref;-erence to the ttached-drawings showsran exemp ary;emhodimenteofrtheinvention arranged o: o perate-With; at ypin rene orator; Oil the ime:-isolo edei'n the. abmleeidentifiedi applicae ioni oi: Bacon, eat: all.

Referrin rncrwrto-the drawings; H renresents a ypin reneriorator of:hmtypeedisolo'sed, in the aboveeidentifiefie appl cation of? Bacon; et;a1; t t-mine repenforaton isicontrolledi by." the see lectm-g' ma n t-:42r. andki$a1SQpr0VidQd Withithe feed-out magnet l3. The receiving relaylzili foli lows:the: i naiszreceivemoyenlineli and repeats theirceivedrsig-naisotoothe selecting: magnet. l2 oisth ynin orenertoratoriThe:-selecting mags net:- I 2 n1: turnscausesrthertsfipingere errorator'to bo h; prints e iiewonfding characters: on? a'ztap'e andralsovperforateathestape :ineaocordancei there wit-In 'Iihe reperforators 'causesthe tape to be advancedeone: lot-ten: space'ior each character receiveot during; normal operation .-0fy the me'cha nismr Duringztheireception of signals amiruitiiskalso completed; through thespacingr contacts of: relay lifl for the: operation oft the 'slows'release re layf L4: Tiheirelay-v this: suffioientlyi slow "sotthatit'-'.W,-i1l-i remainl" operated: during:- all thefi -nfarkin'gpulseswofrsignalswreceivedi overt line 13 and fon" a short-r1; interval1 of timeafter; signals have been received-, over'line I 'g Atape-fed-out key I e isi rovided to eri'able the operator to cause thereperforator to advance the tape through the mechanism independently ofreceived signals, that is, when no signals are being reoeived theoperator may cause the mechanism to advance the tape through themachine.

' signals.

As described in the above-identified application should maintain itscontacts closed during a time interval substantially equivalent to thetime required for the reception of three character code combinations.Inasmuch as contacts of relay I maintain the selecting magnet l2operated, the selector cam drum will not be released by any of thespacing pulses of any of the received signals. Consequently, the signalsreceived during the time contacts ofrelay l5,are closed do not cause theselector cam drum of typing reperforator ll be released for rotation.

of Bacon et al. the operation of-magnet-l3 release the selector camdrumof the reperforator H and allow it to rotate independently of thesignals or the operation or release of the selector I magnet [2. Theoperation of key I6 also completes a circuit for the operation of relayl5. Rei for holding the selecting magnet l2 operated. Thus-with theselector magneti2 operated-and the selector cam released thetypingreperforator will cause the letters signals to be recorded inthe tape byperforation. *Itis also possible to print-a symbol on the tapeindicating that thesignals perforated therein are letters signals; i

Upon the release of 'the'feed-o'ut key IS the circuit of the feed-outmagnet-l3 vvill be interrupted and magnet l3'will'release. Then theselector cam drum of thetyping reperforator II will'come to rest and theinstrument stop feeding out the tape. At'a short interval after-key l6hasbeen released relay will release and remove the short-circuitfromaround the marking contacts of relay 10. Signals received thereafterover line L will be repeatedto-theselector magnet l2 inthe normal mannerand recorded bythe recording instrument H'.- The above cycle ofoperation of the typing reperforator may be repeated as oftenas desiredby the operatorwhenever nosignals are being received. During the timesignals are being received re lay His operated-and maintained operatedas described above. Consequently, if-key I6 is operated at this time itwill be inefiectiveto cause the operationof eitherrelay l5 ofthe-feed-out magnet l3. Consequently, any inadvertent or improperoperation of key l 6 duringthe time signals are being received willnot'in any wayinterfere with or affect the reception of thereceived Ifkey I6 is operated'during the timeno signals are being received, asdescribed above, and if while key 16, is maintained operated, signalsare received, relay I l-will operate upon the first spacingpulsereceivedand interrupt the circuit of the. feed-out magnet 13 and theslow release relay 15. The feed-out magnet. l3 will release and causethe selector cam drum of the recorder H to come toirest. uRelay l5isa-slowrelease relay 'and will maintain its contact closed for anappreciable interval of time after relay l4 operates.

Consequently, the circuit of the selector magnet I2 is maintained closedat this time so that the magnet will not follow the first signalsreceived from the line L. Inasmuch as a time interval equivalent to thetime of three code combinations is required to release magnet l3 andstop the selector cam drum, relay IS in (the exemplary lay IS inoperating completes an auxiliary circuit embodiment of the inventiondescribed herein At the end of the time interval equal substantia1ly tothe time required for the reception of three code combinations, relay I5will release and "remove the short-circuit from around the contact It]to repeat the received signals to the selector magnet l2. In thismanner, it is possible to reduce the number of all code combinationsrequired to synchronize the typing reperforator l I from four to three.In addition, anadditional factor'of safety is secured because withrelayl5 maintaining the selector magnet l2 operated, the recording devicewill be conditioned to accurately receive'and record signalsindependently of the character of the .first three code combinationsreceived from line L. r

What is claimed iszi 1. In combination a telegraph reperforator forrecording signals on-a recordmedium including a control magnet, acircuit for said magnet, apparatus for repeatingtelegraph signals tosaid magnet -over-said circuit forcontrolling said reperforator inaccordance with received signals, auxiliary apparatus for advancing arecord medium through said" reperforator independent of receivedsignals, and apparatus operative incident to the operation of saidauxiliary apparatus'for controlling said magnet for an interval of timeindependently of received signals. a 2. In combination, atelegraphreceiver for recording messages on a record medium in accordance withreceived signals, a magnet for controlling said receiver, a circuittherefor, apparatus'ior repeating signals to said'magnet over saidcircuit, equipment-for advancing said record medium through saidreceiver independently of received signals, .a slow release relayoperated incident to the operation'of said equipment, and circuitconnections between said magnet and said slow release relay. formaintaining said magnet operated during the time said slow release relayis operated. w ,3. In combination; a telegraph receiver for recordingmessages on a record medium in accordance with received signals, amagnet for controlling said receiver, a. circuit therefor, apparatus forrepeating signals to said magnet oversaid circuit, equipment .foradvancing said record medium through said'rreceiver independently ofreeeived signals, a slow 'release relay operated incidentjto theoperation'of saidequipment, and circuit connections between said magnetand said slow release relay .for maintaining said magnet operated duringthe time said slovi release relay is operatedand apparatus responsiveto'received signals for preventingzthexoperation of said equip-WALTER-MQBACON.

